These sorts of threads always confuse me. Why do so many people think that a fulfilling life only exists with a partner?!
I've been single forever. Love it. I live in central London so I've got loads on my doorstep. Most weeknights I'm out. I go to the theatre a lot, often alone because I prefer it, though also often with friends. Meet up with friends for drinks and dinner usually once or twice a week. Now the weather's warmer, I also love a night walk around London - I go for lovely long wanders by the river and have a good old nose into people's houses
. I also do an online class one night a week in one of my hobbies, which is great fun.
If I'm in of a weeknight, I always cook a nice dinner, and then it depends - sometimes I'm in the middle of a great book and will just want to curl up and read, sometimes I'll be binge watching something on Netflix, sometimes I'll facetime friends/family, often I'll practice the piano, sometimes I'll work on whatever I'm currently writing. Occasionally I'll need to do a bit of work if I'm behind (I'm freelance).
Weekends it totally depends - sometimes I just want a quiet one, so I'll spend it pottering about at home, doing life admin, might bake a cake or something like that, catch up with friends over the phone etc. Sometimes I'll meet people for brunch/lunch/dinner/drinks, go to a gallery/museum or cinema, sometimes a matinee at the theatre, a walk on Hampstead Heath, etc. Sometimes I'll go away for a long weekend with a friend, sometimes I'll go and stay with family outside London. Sometimes I need to work, sometimes I don't. Sometimes I'll spend all weekend in bed reading if that's what I fancy. Today I sat in the garden for most of the afternoon, soaking up the rays. It was bliss.
In short I do whatever I feel like doing. I love my life.
Key for me is that I have loads of hobbies and a wide circle of friends. Plus I find where I live endlessly interesting. Honestly just going for a walk is super entertaining as far as I'm concerned -there's always something new to notice in London, even though I've lived here all my life.
Embrace the freedom, OP - don't feel like you can't do stuff because you've got no one to do it with. Live your life!